The document discusses leadership in the music industry and how it has changed with new technology. It provides examples of leaders who have adapted successfully to these changes. Specifically, it discusses how streaming has replaced CDs and MP3 downloads, and that leaders must change with technology or risk being left behind. They must embrace disruption as an opportunity and be willing to cannibalize their own business models. Good leaders profiled include Jay-Z, Diplo, Quincy Jones, and Rick Ross who have started labels, adapted to streaming, and helped develop other artists' careers.